CN110454775A - A kind of flue gas anticorrosion and coking wind system - Google Patents
A kind of flue gas anticorrosion and coking wind system Download PDFInfo
- Publication number
- CN110454775A CN110454775A CN201910700494.7A CN201910700494A CN110454775A CN 110454775 A CN110454775 A CN 110454775A CN 201910700494 A CN201910700494 A CN 201910700494A CN 110454775 A CN110454775 A CN 110454775A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- charge
- general pipeline
- measuring device
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 115
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000004939 coking Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000001464 adherent effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of flue gas anticorrosion and coking wind system, including side water wall, flue gas general pipeline, flue gas is in charge of and nozzle；One end of flue gas general pipeline is connected to economizer exit flue, and cleaner, circulating fan, general pipeline shutoff door, general pipeline are installed on flue gas general pipeline and adjust door, general pipeline flue gas pressures measuring device, general pipeline flue gas measuring device and cinerary device, the other end of flue gas general pipeline is in charge of with more flue gases respectively to be connect, and it is equipped on flue gas is in charge of and is in charge of shutoff door, be in charge of adjusting door, be in charge of flue gas pressures measuring device and be in charge of flue gas flow measuring device, nozzle, which is in charge of by metal hose with flue gas, to be connect, and nozzle is arranged in opposite directions with side water wall.High-temperature flue gas is sent into water wall high temperature corrosion region by flue gas blower, cleaner, flue gas main pipe, flue gas branch pipe, metal hose, nozzle by the present invention, a kind of adherent air curtain is formed on water-cooling wall, high-temperature flue gas and particle are kept apart with water-cooling wall, alleviate high temperature corrosion and coking.
Description
Technical field
The present invention relates to the systems of boiler combustion high temperature corrosion resistance and coking, more particularly, to the high temperature corrosion resistance of water-cooling wall
With the system of coking.
Background technique
Boiler develops to high capacity high parameter in recent years, overcritical from 600MW Subcritical Units to 600MW, ultra supercritical,
To 1000MW ultra supercritical, boiler water wall temperature is accordingly increased, and water wall high temperature corrosion problem is more serious.
Pulverized-coal fired boiler water wall high temperature corrosion generally has following several forms: sulfate type high temperature corrosion, sulfide type are high
Warm burn into chloride type high temperature corrosion and the high temperature corrosion as caused by reducibility gas.Existing high temperature corrosion measure is most
Both for high temperature corrosion caused by reducibility gas, in fact burn in furnace complex, and Corrosive exists simultaneously,
It is excessively single by the measure for reducing reducing atmosphere, it is difficult to achieve the desired results.
Summary of the invention
It is an object of the invention to be directed to water wall high temperature corrosion and coking phenomenon, and provide a kind of flue gas anticorrosion and knot
Burnt wind system, to slow down high temperature corrosion caused by water-cooling wall reducibility gas.
Technical solution used by the present invention solves the above problems is: a kind of flue gas anticorrosion and coking wind system, including
Side water wall, characterized in that further include flue gas general pipeline, flue gas is in charge of and nozzle；One end of the flue gas general pipeline and economizer
Exhaust pass connection is equipped with cleaner, circulating fan, general pipeline shutoff door, general pipeline on flue gas general pipeline and adjusts door, Zong Guanyan
Air pressure force measuring device and general pipeline flue gas measuring device, the other end of the flue gas general pipeline are in charge of company with more flue gases respectively
It connects, cinerary device is installed in the bottom of the flue gas general pipeline other end, is equipped on flue gas is in charge of and is in charge of shutoff door, is in charge of adjusting
Door is in charge of flue gas pressures measuring device and is in charge of flue gas flow measuring device, and the nozzle is in charge of by metal hose and flue gas
Connection, the nozzle are arranged in opposite directions with side water wall.
Flue gas general pipeline chooses suitable position from economizer exit to flue air preheater entrance, draws a certain amount of
High-temperature flue gas, pressurize by dedusting and blower, provide a system to the high-temperature flue gas to meet the requirements, overall control mode can be with
Using adjusting door or frequency conversion fan.Blower uses power frequency or conversion system, and frequency conversion can use frequency converter or speed control device.If adopting
With frequency conversion fan, general pipeline, which adjusts door, to be cancelled.It adjusts door and shutoff door uses electric and pneumatic executing agency, adjust the tune of door
Section mode is according to pressure, flow, smoke components coupling control.Nozzle configures fast interface, is in charge of flue gas by metal hose
Boiler expansion between nozzle is eliminated.Fast interface, it is mating with metal hose butt joint, it between the two can be living by screw thread
Connection, can also can be disconnected and be connected according to demand by the connection type of push type.
Further, the flue gas, which is in charge of, is connect with flue gas general pipeline by threeway or elbow.
Further, the distribution spacing of the nozzle is 150-3000mm, distribution spacing according to practical boiler flow field and
Nozzle formations determine.
Further, when work, flue gas is drawn from economizer exit flue, the cloud of dust is gone by cleaner dedusting formation
Gas, dust removal flue gas is in charge of after being pressurized by circulating fan by flue gas, metal hose and nozzle enter side water wall and form cigarette
Gas-bearing formation is isolated high-temperature flue gas and side water wall, while reducing high-temperature flue-gas, and high-temperature flue gas is avoided to connect with side water wall
Coking is generated when touching.
Further, general pipeline adjusts door and is adjusted according to general pipeline flue gas pressures measuring device and general pipeline flue gas measuring device
Section；It is in charge of and adjusts door according to being in charge of flue gas pressures measuring device and be in charge of flue gas flow measuring device and be adjusted.
Compared with prior art, the present invention having the following advantages that and effect: present invention reduces side water wall region height
The content of etchant gas in warm flue gas, while also water-cooling wall being isolated with high-temperature flue gas, it reduces etchant gas and is contacted with water-cooling wall,
The generation for reducing high temperature corrosion reaction, due to reducing the temperature of high-temperature flue gas simultaneously, to slow down coking phenomenon.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
Fig. 2 is that flue gas is in charge of arrangement schematic diagram in the embodiment of the present invention.
In figure: flue gas general pipeline 1, cleaner 2, circulating fan 3, general pipeline shutoff door 4, general pipeline adjust door 5, general pipeline flue gas pressure
Force measuring device 6, general pipeline flue gas measuring device 7, flue gas are in charge of 8, are in charge of shutoff door 9, are in charge of adjusting door 10, metal hose
11, nozzle 12, be in charge of flue gas pressures measuring device 13, be in charge of flue gas flow measuring device 14, cinerary device 15, side water wall
16。
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Referring to Fig. 1 to Fig. 2, flue gas anticorrosion and coking wind system in the present embodiment, including side water wall 16, it is special
Sign be further include that flue gas general pipeline 1, flue gas are in charge of 8 and nozzle 12；One end of flue gas general pipeline 1 is connected to economizer exit flue, In
Cleaner 2, circulating fan 3, general pipeline shutoff door 4, general pipeline are installed on flue gas general pipeline 1 and adjust door 5, the measurement of general pipeline flue gas pressures
Device 6 and general pipeline flue gas measuring device 7, the other end of flue gas general pipeline 1 are in charge of 8 by threeway or elbow with more flue gases respectively
Connection, cinerary device 15 is installed in the bottom of 1 other end of flue gas general pipeline, flue gas be in charge of on 8 be equipped be in charge of shutoff door 9,
It is in charge of and adjusts door 10, is in charge of flue gas pressures measuring device 13 and is in charge of flue gas flow measuring device 14, nozzle 12 is soft by metal
Pipe 11 and flue gas are in charge of 8 connections, and nozzle 12 and side water wall 16 arrange that the distribution spacing of nozzle 12 is 150- in opposite directions
3000mm。
When work, flue gas is drawn from economizer exit flue, dust removal flue gas, dust removal are formed by 2 dedusting of cleaner
Flue gas is in charge of 8, metal hose 11 by flue gas after being pressurized by circulating fan 3 and nozzle 12 enters side water wall 16 and forms cigarette
Gas-bearing formation, isolation high-temperature flue gas and side water wall 16, while high-temperature flue-gas is reduced, avoid high-temperature flue gas and side water wall
Coking is generated when 16 contact, system control mode can access DCS automatic control or individually PLC system control.
General pipeline adjusts door 5 and is adjusted according to general pipeline flue gas pressures measuring device 6 and general pipeline flue gas measuring device 7, can
To be set as automatically adjusting.
It is in charge of and adjusts door 10 according to being in charge of flue gas pressures measuring device 13 and be in charge of flue gas flow measuring device 14 and adjusted
Section, can be set to automatically adjust.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology should belong to guarantor of the invention in made change without departing from the spirit and scope of the invention
Protect range.
Claims (5)
1. a kind of flue gas anticorrosion and coking wind system, including side water wall (16), characterized in that further include flue gas general pipeline
(1), flue gas is in charge of (8) and nozzle (12)；One end of the flue gas general pipeline (1) is connected to economizer exit flue, total in flue gas
Cleaner (2), circulating fan (3), general pipeline shutoff door (4), general pipeline are installed on pipe (1) and adjust door (5), general pipeline flue gas pressures
The other end of measuring device (6) and general pipeline flue gas measuring device (7), the flue gas general pipeline (1) is in charge of with more flue gases respectively
(8) it connects, cinerary device (15) is installed in the bottom of flue gas general pipeline (1) other end, is in charge of to be equipped on (8) in flue gas and be in charge of
Shutoff door (9) is in charge of adjusting door (10), is in charge of flue gas pressures measuring device (13) and is in charge of flue gas flow measuring device (14),
The nozzle (12) is in charge of (8) with flue gas by metal hose (11) and is connect, the nozzle (12) and side water wall (16) phase
To arrangement.
2. flue gas anticorrosion according to claim 1 and coking wind system, characterized in that the flue gas is in charge of (8) and cigarette
Gas general pipeline (1) is connected by threeway or elbow.
3. flue gas anticorrosion according to claim 1 and coking wind system, characterized in that between the distribution of the nozzle (12)
Away from for 150-3000mm.
4. flue gas anticorrosion according to any one of claim 1-3 and coking wind system, characterized in that, will when work
Flue gas is drawn from economizer exit flue, forms dust removal flue gas by cleaner (2) dedusting, dust removal flue gas passes through circulating fan
(3) it is in charge of (8), metal hose (11) and nozzle (12) by flue gas after being pressurized to enter side water wall (16) and form flue gas layer,
High-temperature flue gas and side water wall (16) are isolated, while reducing high-temperature flue-gas, avoid high-temperature flue gas and side water wall
(16) coking is generated when contacting.
5. flue gas anticorrosion according to claim 4 and coking wind system, characterized in that general pipeline adjusts door (5) according to total
Pipe flue gas pressures measuring device (6) and general pipeline flue gas measuring device (7) are adjusted；It is in charge of adjusting door (10) basis and is in charge of cigarette
Air pressure force measuring device (13) and it is in charge of flue gas flow measuring device (14) and is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700494.7A CN110454775A (en) | 2019-07-31 | 2019-07-31 | A kind of flue gas anticorrosion and coking wind system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700494.7A CN110454775A (en) | 2019-07-31 | 2019-07-31 | A kind of flue gas anticorrosion and coking wind system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110454775A true CN110454775A (en) | 2019-11-15 |
Family
ID=68484214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910700494.7A Pending CN110454775A (en) | 2019-07-31 | 2019-07-31 | A kind of flue gas anticorrosion and coking wind system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110454775A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880204A (en) * | 2021-03-15 | 2021-06-01 | 伟明环保设备有限公司 | Method for protecting smoke side smoke screen of boiler |
| CN113074545A (en) * | 2021-03-09 | 2021-07-06 | 西安交通大学 | Anti-coking rotary kiln and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203642223U (en) * | 2014-01-02 | 2014-06-11 | 国家电网公司 | Intelligent high-temperature corrosion prevention system applicable to water-cooled walls of large power station boilers |
| CN104456538A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Device and method for retarding high-temperature corrosion on rotational flow opposed combustion boiler water wall |
| CN106482093A (en) * | 2016-11-30 | 2017-03-08 | 东方电气集团东方锅炉股份有限公司 | Face-fired boiler and the flue gas recirculation combustion system with the boiler |
| CN206257660U (en) * | 2016-08-17 | 2017-06-16 | 哈尔滨锅炉厂有限责任公司 | The low-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers |
| CN210772132U (en) * | 2019-07-31 | 2020-06-16 | 华电电力科学研究院有限公司 | Smoke anti-corrosion and coking air device |
-
2019
- 2019-07-31 CN CN201910700494.7A patent/CN110454775A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203642223U (en) * | 2014-01-02 | 2014-06-11 | 国家电网公司 | Intelligent high-temperature corrosion prevention system applicable to water-cooled walls of large power station boilers |
| CN104456538A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Device and method for retarding high-temperature corrosion on rotational flow opposed combustion boiler water wall |
| CN206257660U (en) * | 2016-08-17 | 2017-06-16 | 哈尔滨锅炉厂有限责任公司 | The low-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers |
| CN106482093A (en) * | 2016-11-30 | 2017-03-08 | 东方电气集团东方锅炉股份有限公司 | Face-fired boiler and the flue gas recirculation combustion system with the boiler |
| CN210772132U (en) * | 2019-07-31 | 2020-06-16 | 华电电力科学研究院有限公司 | Smoke anti-corrosion and coking air device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074545A (en) * | 2021-03-09 | 2021-07-06 | 西安交通大学 | Anti-coking rotary kiln and working method thereof |
| CN112880204A (en) * | 2021-03-15 | 2021-06-01 | 伟明环保设备有限公司 | Method for protecting smoke side smoke screen of boiler |
| CN112880204B (en) * | 2021-03-15 | 2022-08-09 | 伟明环保设备有限公司 | Method for protecting smoke side smoke screen of boiler |
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